,Extension of a Simple Model for f- d Transition and Applications to Reassignment of Excitation Spec

来源 :中国物理快报(英文版) | 被引量 : 0次 | 上传用户:succeeboss1
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
We present an extension of the original simple model for f -d transition proposed by Duan and co-workers [Phys.Rev. B 66 (2002)155108; J. Alloys Compound. 366 (2004)34] to the case applicable to heavy lanthanide and actinide ions in crystals and apply it to the interpretation of the low-temperature f -d excitation spectra of Ho3+doped in crystals LiYF4 and CaF2. A consistent assignment of all the transition bands is obtained.
其他文献
许多高等植物能分泌抗生物质或自毒性物质,茶树是否能分泌自毒性物质,目前尚无报道。但从成龄茶园中每年落于土中的大量茶籽却不能成苗、茶园换种改植时新植茶苗的成活率及
We study the photoluminescence (PL) and the PL dynamics of Ir(PPY)3-doped poly(N-vinylcarbazol) (PVK)under the modulation of an electric field. The results show
期刊
有关癌干细胞及其生物学特性研究信息的不断积累,推动了放射肿瘤生物学的发展.近年来的研究发现,癌于细胞和静止期癌细胞可能是导致肿瘤放射抗性增加和肿瘤放射治疗后复发的主要细胞学基础,有关这两种癌细胞亚群的放射敏感性及其机制的研究进展迅速,为提高肿瘤对放射治疗敏感性的措施研究提供了新的学术思路.该文将就癌细胞亚群的放射分子生物学特性,分析讨论肿瘤放射抗性的细胞学基础和相关分子机制。
High order fibre mode structures are measured by a near-field scanning optical microscope (NSOM) and are determined to be consistent with the standard fibre LP
期刊
We present an "all versus nothing" to show Bells theorem without inequalities involving 2n observers. As a by-product, we also shows that quantum mechanics can
期刊
We have theoretically investigated the optical absorption spectrum and intraband dynamics by subjecting a superlattice to both a terahertz (THz)-frequency drivi
期刊
战史陈列馆是我国红色旅游的经典景区、也是我国爱国主义教育的示范基地,而战史陈列馆作为我国精神文明建设的重要宣传基地与革命教育、爱国主义教育的主阵地,具有一定代表性
目的 研究对甲基桂皮丹酚酯的抗辐射活性.方法 以6~8周龄的ICR小鼠作为研究对象,经137Csγ射线一次性全身照射后,以30 d存活率、血液生化指标、脏器指数及肺和肝的超氧化物歧化酶(SOD)、丙二醛为指标,考察低、中、高3个剂量组的对甲基桂皮丹酚酯的抗辐射损伤效应.结果 对甲基桂皮丹酚酯可以提高经8.5 Gy 137Cs γ射线一次性全身照射损伤ICR小鼠的30 d存活率,对小鼠经6.5 Gy
Membrane tethers are extracted from breast cancer cells using a force generated by an optical trap. It is experimentally obtained that the radius of tether is a
期刊
Sanwal et al. [Astrophys. J. 574 (2002) L61] supposed that it is very difficult to interpret the absorption features in terms of cyclotron lines. However, we wo
期刊